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Crinoid (Promachocrinus kerguelensis), primitive relative of sea stars, highly mobile, mouth is located within the center of the ring of arms, Antarctica; photo by Norbert Wu.

“Von Karman cloud vortices above Alexander Selkirk Island, Chile. These clouds look like they have had a hole punched through them. In fact they are naturally occurring vortices crafted by wind patterns on the clouds. In this image these cloud vortices (swirls down left) have been caused by the peak of Alexander Selkirk Island (bottom left) disrupting wind-blown clouds.”

Lichenes, plate 83 from Kunstformen der Natur (1904) by Ernst Haeckel

Tomato. (MRIs turned into animated GIFs if you click through to website.)

Spores and elaters of Lepidozia sp., a liverwort, at 100-times magnification. Image by Ron J. Oldfield, Macquarie University.

light micrograh of vein pattern: Flaveria trinervia

There are already more than 3,000 known varieties of nudibranch.